Bearing



sept. 21,1926; l 1,606,926 B. B BRlGc-s I BEARINGv l Filed Nv. 21, 1925 Patented Sept. 21, 1926;..

UNITED STATES PATENT OFFICE.

.'BURDETT B. BRIGGS, 0F CHICAGO, ILLINOIS-'.1

BEARING.

Application filed November 21,1925. Serial' No. 70,6022

means for positively securing and lockingV the same in desired adjusted position and wherein clearance is provided for the adjacent portion of the pin engaged within the bearing to assure perfect adjustment.r

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved bearing whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the vsame with reference to the accompanying drawings, wherein Figure l is a view in elevation illustrating a piston having a bearing applied thereto constructed in accordance with an embodiment of my invention; Y

Figure 2 is a vertical-sectional view taken through the structure as illustrated in Figure l;

Figure 3 is an enlarged fragmentary view partly in section and partly in elevation il` lustrating in detail certain featuresof construction as herein employed;

vFigure 4 is a sectional viewv taken through one of the bushings herein disclosed.

As disclosed in the accompanying vdrawings, l denotes a piston body orshell .provided 'at diametrically opposed points with the inwardly disposed bosses 2 each coninued by a radiallyfdisposedflange 3 eX- Vtending toward the open end of the piston body. This flange is longitudinally split, as at a, in a direction radial of the body l, said kerf a being continued by a slot 4 in the wall of the body l proper. The lower end of the slot 4 in the wall proper isv continued by the circumferentially disposed slot 5 in said wall of the bodyand extending beyond opposite sides of the slot 4. The outerA portion of the lierf of the flange at the inner end thereof is closed, asiat 6, hereinafter referred to.

Threaded in each of the bearing bosses 2 for a purpose to be l i is a bushingv 7 the bore of which beingy tapered from end'to end With its larger eXtremity inwardly disposed. The periphery of this bushing `7 at points spaced circumferentially,therearound'is provided with the longitudinallyldisposed grooves 8 substantially V-shaped in cross-section and each Vof which beingv adapted to registerwith thev innerend of the kerf a which is `also dis.- posed through the wall of the boss 2.

A locking plate .9 is arranged Within theV l inner portion of the kerf to be moved to seat within Y a groove S to hold the applied bushing 7 against rotation within the boss 2. The outer margin of the plate 9 at its central'portion is provided with a recess l0 in which `is received the in- Aur, and is adaptedV termediated tapered portion Z) of an adjusting screw ll. The adjusting screw at opposite sides of .its tapered portion b is screw-threaded `and the outer reduced portion of thevadjusting screwis in threaded engagement with the flangeB at one side of the kerf a while the opposite larger end portion of the adjusting screw is freely disposed Vthrough the 'flangeB at the opposite side of said kerf. Byrotatino the adjusting screw l1 in one direction, the tapered portion ZJ thereof Ywill cause the locking platev 9 to move inwardly of a groove 8 in the bushing and thereby effectively hold said bushing against turning movement within the boss 2. The larger end portion of the ad-v justing screw ll has threaded thereon a lock nut l2 which, when incontact .with the adjacent vface of the flange 3, effectively holds the Vadjusting screw 1l against` accidental displacement.

.- The bushing 7 is further heldin applied position by the Screw bolt 14 which extends within the kerf a of the flange 3 and is threaded through the portion Gthereof. i

The outer ends of the grooves 8 .provide openings whereby a Spanner wrench or kindred tool may beengaged with'the bushing` when it is desired to adjust the same within the lboss 2. i Each of the bushings 7 snugly receives a tapered end portion of a'wrist or crank pin 15 and the` innery or largerend of each of lli).V

said tapered portions c is .defined by an` annular recess or groove d disposed cir-,cum-

A erentially around the pini 'l This groove or Vrecess provides a,Y clearance `for the-innerer hell end ot the adjacent finishing.. As disf closed 1n the accompanying' drawings, the

larger or bell end oi the bushing projfec/ts larger diameter Q the beyond the inner or r tapered portion c ot'the'pin 15. lt Iisjobvious that Withontsucli, clearance at this point onthe wrist pin a collar or shoulder'. vvoiildbe Worn onfthe pin as a result of the constantffriction thereonv andA which shoulder would Prevent' the perfetti. adjustment Of the bushing .upon the pin;

f The enter or smaller end portionot the f .bore of eachy ofthe bushings 7 isjenlarged,

tapered portion ci" as at e, whereby the outer or smaller exe portionof'tlie Wall of Contatlng with sa@ This enlargedlportion e tremity VGot a-l tapered portionc` of thevpin o projects beyoiidf'th the4 bore direc'tl Y Y ,also "provi es .a clearance at' the. outer er smaller ',exfremity of` a tapered portion 2 to permit Yerlective' adj'yustmentkotf .the bnshing "in 'the'everrt said outer extremity of the Y tapered portion Vc becomes unduly Worn.

"" As Vthefcranl; or Wrist pinkor the 'bushings l 7 fivear, said bushings 'i'. 'upon` proper release Vcan bereadily 'turned in a direction to force ffor which reason 'the Wall 'of the piston -body 1 'is lprovided'v'vith 'a surface-hole! o r opening18; Y i

The 'Wall ot '.tlre bore of :each of `thebush-V ings 7 `is also 'preferably provided with Voil Vgrooves v'to facilitate `'thefreqnisite 'lubricaf tion, eachof said grooves 119, as illustrated Vin Figure 1,v being lwhat may `'be termed radially inclined. l

From the Viforez'qoing description it is thought :to "be obvious'that a :bearing con- Y structed infaccorda'nce vWithymy invention is particularly yvelladapted for use by 'reason of the L convenience and facility with which it 4may, be V*assem'lile'd'andoperated, vand Ait will also v"be Aobvious 'that my. tinvention is susc`eptilolev o'fvsome ichange land modiiieati-Qn Without departing` from; the principles jand spirit "thereof-and for 'this-reason YI do not Wish 'to be iinderstoodfas 'limiting myself to the precise;arrangementandformation orf l"the 4several parte herein shown lin :carrying ont my inventionin practice except as here inatter claimed.

I- Aclaim 1'2. lncombination with a piston body provided With inwardly disposed bosses and a Vivrirstpin having its opposite end portions tapered, a bushing` in each of the bosses and havingatapered bore to receive a 'tapered end portion of the pin, each bushing adapted to be lforced inward toward. the opposed bushing, and'- means holding the 'bushing in atlg'nsted position -Within` the bore oi 'the boss, y the outer extremity of the tapered portion ot the pinextending' outy beyond" the lcoacting portion of the bore oit the bushing.

2. ln combinationvvit'h a piston 'body'provided with inwardly disposedlbosses and a Wrist pin havingl its opposite endportions tapered, a bus 'bosses-and lia-ving KYa tapered bore to receive the te, )ered end portion oit' the pin, each bushing having av Vrecess' on the periphery hing threaded' 'in each of the thereof, and av member supportecl by the y piston and hai/*ing a'taperedp'ortion engaging .the .recessio 'the bushing to fhold the bushing in adjusted position. 'o l 3. In combination ivithaV piston body having inwardly disposeclbosses and' a Wrist pin haying tapered-end portions, Ybuslriings threaded" Within each o1 thezbosses and haie ing; taperedbores 'to receive ythetapered portions oit the Wrist pin, each of' said bushings having circuinferentially spaced; grooves ,disposed lengthwise thereof, and v means operatively supported by theA piston body and selectively engaged within a groove ot the bushing to hold 'the bushing against retation. J

4C, ln ,combination with .a piston -body yhaving inwardly disposi-ndrbossesandV a Wrist ein :haring 'termed' @ed frm-tions busti 'threaded Within i the "bosses VVand 'having tapered4 bores to receive :thejtaperedend vportions ofthe pinyeac'h or,V said bosses being continuedby ailange, said iange"having` a kerf therethrough. in communication .With the'bore ofthe boss, alodckinvg plate slidably mounted Within 'the hert, 'the *bushing being 4providedfin"its-periphery with grooves, and means` carried by the rvflange"and coacting with the plate `for moving 4the plate to engage Within a-jgroove of the bushing.'

5. 'In combination fvvitha piston body having-inwardly disposed bosses and aivvrist lpin having tapered endjportions, bushings "threaded vvitjhin the bosses and having 'tapered-boresto receive Ythe tapered,` end `portions et the" pin, yeach of said bosses being continued :'by a flange, Ysai-d flange Vhaving a 'lier-f "therethrough in communication :With tliej-bore 'of' the boss, Va locking plate slidablymountedWithin the ke1j',/tlie bushing being ,p'rovided `Ain its Aperiphery :with grooves, -a 'shank V'disposedthrough the flange and in threaded engagement therewith, the portion of the shank intersecting the kerf being tapered and having Contact ably mounted Within the kerf, the bushing being provided in its periphery with grooves, a shank disposed through the Hange and in threaded engagement therewith, the portion of the shank intersecting the herr being tapered and having contact'with the plate to force the plate into engagement with a groove of the bushing upon rotation of the shank 'in one direction, and means for holding the shank against rotation.

7. In combination with a piston body having inwardly disposed bosses and a wrist pin having tapered end portions, bushings threaded within the 'bosses and having tapered bores to receive the tapered end portions of the pin, each of said bosses being continued by a fiange, saidA flange having a lrerftherethrough in communication with the bore of the boss, a locking plate slidably mounted within the kerf, the bushing being provided in its periphery with grooves, and means carried by the flange and coacting with the plate for moving the plate to engage within a groove of the bushing, said lrerf being continued by a slot through the wall of the piston body.

8. In combination with a pist-on body having inwardly disposed bosses and a wrist pin having tapered end portions, bushings threaded within the bosses and having tapered bores to receive the tapered end portions of the pin, each of said bosses being continued by a flange, said flange having a lrerf therethrough in communication with the bore of the boss, a locking plate slidably mounted Vwithin the kerf, the bushing beingprovided in its periphery with grooves, and means carried by the flange and coacting with the plate for moving the plate to 'engage within a groove of the bushing, said kerf being continuedby a slot through the wall of the piston body, the-end of the slot y remote from the bushing being in communication with a second slot in the piston wall, I said second slot being angular-to the first slot. Y Y.

9. In combination with a piston body having inwardly disposed bosses and a wrist pin having tapered end portions, bushings threaded within the bosses and havingta-- pered bores to receive the tapered endportions of the pin, each of said bosses being continued by a flange, saidflange having a lrerf therethrough in communicationwith the bore of the boss,.a locking plate slidably mounted within the kerf, the bushingV being provided in its periphery with grooves', and

means carried by the Aflange and coacting l with the plate for moving the plate to engage Within a groove ofthe bushing, saidV lrerf being' continued by a slot through the wall of vthe piston body,- the'end of the slot remote from the bushing being/in comniunication with a second slot in said second slot extending beyond the opposite sides ofthe first slotV and substantially at right angles thereto.

the piston wall,

l0. In a piston body provided with in- Y wardly disposed bosses and a Wrist pin hav- ,v

ing its opposite end portions tapered, a bushing threaded in each of the bosses and having a tapered bore to receive the tapered end portion of' the pin, andmeans for holding the bushing against rotation, the outer end of the pin extending outward beyond thev coacting bushing and the inner bell end of the bushing extending inward beyond the coacting tapered portion of the wrist pin.

In testimonywhereof I hereunto aixmy signature. BURDETT B. BRIGGS. 

